Question

Statement I: The product of relief (H) and drainage density (D\(_d\)) is denoted as ruggedness number.
Statement II: The value of ruggedness number becomes extremely high when H and D\(_d\) are large (when slope is steep and long).
In light of the above statements, choose the most appropriate answer from the options given below:

• A. Both Statement I and Statement II are correct
• B. Both Statement I and Statement II are incorrect
• C. Statement I is correct but Statement II is incorrect
• D. Statement I is incorrect but Statement II is correct

Hint:

Ruggedness number = H \(\times\) D\(_d\).
Higher value indicates more rugged terrain.
Used in morphometric analysis.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Ruggedness number is a geomorphic parameter.
It is used to describe the terrain.

Step 2: Key Formula or Approach:
Ruggedness number = H \(\times\) D\(_d\).
Where H is relief and D\(_d\) is drainage density.

Step 3: Detailed Explanation:
The ruggedness number is indeed the product of relief and drainage density.
This is the definition.
When both H and D\(_d\) are large (steep and long slopes), the ruggedness number becomes extremely high.
This indicates a highly rugged terrain.
Thus, both statements are correct.

Step 4: Final Answer:
Both Statement I and Statement II are correct.
Hence, the correct option is (A).